Mold-finishing- machine



S. A. MCLELLAN MOLD FINISHING MACHINE Jan. 22, 1924. 1,481,381

Filed Jan. 22 1921 3 Sheets-Sheet 1L v JA, @www Jah. 22, 1924.

S. A. MCCLELLAN MOLD FINISHING MACHINE Filed Jan. 22. 1921 3 ShGGS-Sht 2 um. 2z, 1924. 1,481,381

. S. A. MCCLELLAN MOLD FINISHING MACHINE Filed Jan. 22. 1921 5 Sheets-Sheet 3 Samuel MKJMZ cm tiatented dan. V` 'V ien b rhlt'llllll'EL AL. IWCCLELLAN, 0F AKRON', OHIO.

MOLD-lilNSl-XENG MACHINE.

Application tiled January 22, 1.921. Serial No. 439,196.

To all when?, t iii/,ry concern Be it known that li, biennio. ik. ii/loihreta citizen ot the United iitates, residing fron. in the county oi" Summit and State ot hio,` have invented certain new and useiiinl Vimpro'v'cn'ients in liiold--ll'inishingr Machines, oi" which the iifolloivinpj a s iieci'ca tion.

This invention is a machine tor finishing; molds employed ior the production of nonskid tires or tire armors and the primary ob ject ot the invention is to provide efficient means whereby all sharp corners and rough surtaces in` the mold may be ettectually eliminated. 'libe invention further seeks to provide a machine :tor the stated purpose which may be adjusted to any size of mold and in 'which all chat-tering duringthe opertion of the iinishing tool will be overcome. The invention Aturther includes lmeans i'or regulatingthe Vfeed ot the table to the area ot one unit oil. the design employed in the mold, and also includes means whereby the finishing' tool may be easily caused to Eollow the desiun and may be readily adjusted to Wort; upon a inoldoif any diameter. Other incidental obects oi the invention will ap pear in the course oi the following descrip tion.

In the drawings-- Figure 1 is a side elevation, partly broken away, ot the apparatus, a portion ot a mold being; shown in section;

Figi. is an end elevation oi: the main support with the parts mounted thereon;

3 is a detail end vievv ott the motor With the tool shait and its bearing in transverse section;

Figi. 4.- is a detail end view ot a portion et the supporting` frame;

Fig. 5 isaJ detail perspective view of the latchV for holding' the mold carrier or table against movement;

Fig. 6 is a detail perspective view of the means tor controlling the iteed or movement ot the table or mold carrier.

Fig. 7 is a detailv showing in perspective some oi the parts appearing in Fig. 3.

Fig. 8 is a detail section ot the end of the latch.

lin carrying out the invention, l employ a simportingl traine 1 vvhich may be ott' any suitable construction and upon the said frame I pivotally mount a horizontal table or mold carrier 2, a portion oit the pivot housingv whereby the said table is supported beingindicated at 3. rifhe table or mold carrier is preferably circular and the inold si is placed directly upon the tabie and secured in concentric relation thereto by dogs 5 which are radially adjustable upon the table so as to ac connnodatc molds oi di'lieront diameters. @n the under side of the table, at the edge thereof, l provide a rack 6 which is preferably a Worm gear and meshes with a Worm 7 upon a shaft 8 which is journaled in suitable bearings 9 upon the iframe 1 and is equipped at its outer end with a hand wheel 10. rihe periphery ot the Wheel 10 is constructed with spaced socket-s 11 adapted to receive a pin 12 which pin plays in a slot 13 in a stop plate 14 which is secured to a bracket 15 and projects from said bracket over the Wheel, as shown in Fig. 6. The bracket 15 is secured to a base 16 upon the trame l at the end ot the same, and the stop plate is adjutable upon the bracket by means of a bolt 17 inserted through a slot 18 in the plate and engaged in an opening in the bracket, as will be readily understood. Obviously, the movement ot the Wheel 10 is limited by the pin 12 coming` into contact with the end ot the slot 13 so that the table cannot be moved a distance greater than is necessary to teed the mold a dista-nce corresponding to the size ot one unit of the design in the mold. After the Wheel 10 has been moved once, the pin 1 2 is shifted to the opposite end ot the slot and engaged in another socket 11 so that upon the next movement oi" the Wheel it will again serve as a stop. Ott course, a plurality of stop pistes 1.4L will be provided and they Will be used interchangeably so that the size ot' the stop plate in use will be proportioned to the design in the particular mold being finished. Within the base 16, I provide bearings or guides 17 through which a latch 18 is slidably mounted. The said latch comprises a tlat or angular forward portion 19 engaging the correspondingly shaped bearing 17', so as to be held against rotation about its longitudinal axis, and a head 20 at the outer ends of said iiat portion, the said head being normally disposed adjacent thc edge of the table or mold carrier 2. A pin 21 is adjustably fitted in the head 2O so as to project 'forwardly theref trom to engage in one of the openings or sockets 22 formed in the edge ot the carrier and extending entirely around the saine. As

Will be readily understood upon reference to Figs. 1'and'5, these sockets or openings 22 are arranged in a plurality of horizontal series, the spacing of the sockets in the dit ferent series varying so that the travel oi? the table or carrier may be regulated according to the size of the design being finished. In the illustrated arrangement, the sockets in the lowermost row or series are spaced more closely together than the sockets in any other row or series and,'consequently, when the pin 21 is adjusted to engage said lowermost series of sockets, the table will be 'fed the minimum distance at each feeding operation. The latch reduced in rear ot' the dat portion 19 and the reduced stem or shank 23 is circular in cross section, ashoulder or abutment 24 being thereby produced at the rear end of the flat portion 19. A spring 25 is coiled around the shank 23 between the bearing 17 and the said abutment or shoulder and tends normally to hold the latch projected so that the pin 21 will be engaged in one or' the sockets 22. A slot or opening 26 isprovided in the flat portion 19 of the latch and this slot is engaged by the upper end ol a lever 27 which is :'nlcruined i upon the traine 1, as

shown et 2S, and is adapted to' be oscillated by a treadle 29. When the table is to be moved, the treadle 29fis depressed thereby causing the lever 27 to S'Wiingrearwardly and WithdranT the latch i in opposition tothe spring 25 so that the pin 21 vvi'll be released from vthe engaged socket 22 and the table may move. moved by actuating the Worin 7 through ythe hand wheel 1:0 and as soon as the socket which YWas'engageil by the pin 21 has cleared the said pin 'the treadle is released, Wherenponthels'pring 25y will project the latch and hold the `end of said pin against theedgeof the table and automatically engage the pin inA the nextI succeeding socket when the movement of the table brings said socket into registry With the pin, as Will be readily understood.

The sockets in the periphery of the hand Wheel Will be close together soV that a single Vhand Wheel may bel used with a large variety of'molds, but a pluralityiof handwvheels of various s'izesmay be provided and used interchangeably in the same manner that the stop plates 14 are interchangeably nsed.- The stop' late is indicated indotted lines in Fig.

"1inr order to avoid confusion of lines, and it y tvill be understood that the stop plate is arranged 'to lie close to the periphery of the hand Wheel in order to avoid bending of the stop pin and also obtain the proper accurate co'operatipn f thestop plate and the `hand Wheel. The stop pin 12 is, of course, located at the rear end of the slot 13 considered in theY direction'iof movement ofthe hand wheel sothati, Whenthe hand Wheel is rotated, the pfin viill be'oarried toand' against the front The table is end o'l the slot and thereby arrest the movenient of the hand Wheel, at which time the pin 21 will engage a socket 22. The pin 12 is then Withdrawn and engaged in the socket which will then be exposed at the ear end of the slot 13.

Upon the hase 16, l rigidly secure a tool or block 30 upon which is mounted :i standn ard or truss arm 31 which extends forward ly as Well as inwardly so that its upper er: tremity 32 will be vertically over the mold. The said extremity 32 of the standard is formed into an eye through which a threaded har-23 passed. a crank 34, having one end internally threadefl, being engaged on said threaded bar above the eye 32 so as to effect vertical movement of the bar in an obvious manner. A lock nut 35 is fitted upon the bar against the under side ot the terminal 32 so as to hold the said bar in the position to which it may be adjusted. In order to accommodate the position ot the standard to molds ol difierent siz'zes, the lower end of the standard is slidably mounted upon the foot or block 30 which is hollow, and a lug or nut 36 depends from the end oi the standard within the toot to be engaged by a threaded bar 3i" swiveled at its rear ond in the end Wall of the foot and equipped With a lever or other form of handle, as indicated at 38. It will be readily understood that by rotating the handle 38, the threaded bar 37 will act upon the nut 36 to effect sliding movement of the standard upon the toot 30"so that the terminal 32 of the. f-ii'nudard will be readily brought to proper position over the-mold.

rllhe lower end ot the threaded liar 33 is reduced and smooth to pass through a sleeve .or collar at the upper end ot' an inverted U-shaped :traine or hanger hl, a nui` l or its eipiivalent being fitted upon the loner oxtremii'y oi" the said bar 33 :against the under side oi the top of said hanger so as to sus-- tain hanger. on the bar. 'lhe hunger will thus be swiveled upon the bnr so that it may he easily rotated about the suini :is will be readily iuideistood. and :i so( screw Ll2 is mounted. in the upper end ot the hanger and adapted to be turned lionne against the reduced smooth portion oi'I the bar so as to hold the hanger stationary when desired. collar 43 is engaged about the sleeve 39 oif the hangt and to the said rollar lf pivot the lower tin'wurd end or 1; orare del which extends through the upper portion of the standard 3l, as shown, it being real ily uinlerstood that the standard i, A traine, as rshou'n most clearly in l^`iv to permit the said brace har and the pat- Tying n to he di ,iisd centrally :Landard and irinly snpporieil. rl`he brace bar let extends loosely through :i block t5 which is pivoted at its ends in the side walls oin the standard und a unt `rl-G is fitted il. so :is

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on the upper threaded extremity ot the brace and adapted to be turned heine against the seid bloeli:l so es to hold the bar in a set position and permit it to be readily adjusted to ron'torrn to the adjust nient of the bar S3 and the hanger lt). lle loi'v the bloelr ll-5, the stendard 3l constructed in its sides with arcuate slots l? to taolitate the support and adjustment ot the pattern Carrier. The said carrier cons-ists ot a blorlr 41:8 Fitted between the sidee ot the standard and eheh plates titted against the outer sides ot the standard and ronneeted with the said bloeit /l-tl by screws inserted through the eheel: plates and the slots l? into 'the ends of the bloei: `yi8. '.lhe Carrier is completed by an arm or bar Fl inserted through the hloelt lll and adjustably secured. thereto by a eet sereiv ineerted through one side ol e socket on the bleek /l-fl and bearing` against t ie side of said barn will be readily undestood on reference to lig'. 2. The or bar 5l enf tends donfni. dly :in-l torive ely beyond the standard and has its loir/er end in a soelret 54e in the upper side ot the pattern plate 55, a set screw 56 inou/,Nd in the side of said soelret and enpgagzjinp; the end of the erin serving` to serure the pattern plate firmly to the arni. lt will be readily underetood that the pattern plate is in the nature. ot a die having in its lower tace the saine design which is to be 'termed in the mold and a trueer is eaused to tollmv the grooves and lines ot the design in the pattern plate so that the cutter or linishino; tool ivliieh is Connected with the treeer by mechanism presently described will :li'ollow a eorrespending' path and duplicate the de, ein in the mold. rllhe traeer Consists ot u pin 57 fitted in :ft socket 5d on the upper rear corner oi a motor 5f) and held in said soelret by a set screw G0, as will be readily ninlerstood.

The rnotor 59 is mounted in the hanger ffl-tl and preferably en eleotrie motor ot sutlieient power to positii'frlv drive the eutter or Finishing` tool7 indi ited at tl. The

. niotor shalt 62 is equipped with a sproeket iif'lioel and a Chain ti'l is trained around. the raid sproeltet Wheel :ind e sprorlret G4: on the Cutter sha "t rlhe Cutter shatt is rotatably u'iounted in :i sleeve 66 Whieh is litted throiuijh a yoke 6'? and is 1firmly eeeured to the niotor enf-:i ,op shown rlhe sleeve 66 is adjustable endivise through the said yoke 67 and is secured in e set position therein by a, setserew n'iounted in the bottom of the yoke and bearing? against the sleeve, as will be readily understood. The tool 6l is earried by a, chuck 69 which ina be fitted upon the shaft G5 in any convenient manner and bushinpfs 70 are fitted in the ends of the sleeve 6G around the shaftt 65 so as to prolong; the lille of the bearings. @el- Y1 are eeeured upon the shatt 65 against he ends ot the bushings 70 and the hub the sprocket 64 is likewise secured to the shaft by a eet sereiv so that it the ser eral set screws be loosened the shalt may be adjusted endiyiee th rough the Collars, the bushings' and the sprocket Wheel, and the rntter thereby set to worlt at a greater or less distance trom the end ot the sleeve (i5. rl1 he yolte t3? is provided 'with lateral bosses 72 preferably midway its ends l at diametri-rally opposite peints. rllhese lisses tit closely but easily within the lower end ot the hanger l() and reeeivo stud shafts 379/ which have smooth circular portions paseingr through and jourueled in the ends oit the hanger so that they will permit rela tive pivotal movement ot the bosses and the henger. l. Washer 73 is litted against one side of the hanger and a screw 74; inserted through the said Washer into the stud shalt seeures the Washer against dislodpjment, it benne` understood that the inner portion ol the stud shaft is threaded so that it will be readily secured in the threaded socket or bore oit the respective boss At the opposite side et the hanger, l provide leyer or handle 75 which has its lower end dh4 posed ah'ainst the side ot' the hanger,v as shown elearly in litigi: 3, and performs the function o't a Washerj being` held duriplaeeinent by screw 76 eorresi'iondino i n all respects to the serew Pry manipulating the h andle or lever 75, the inotor muy be shitted in both horizontal and vertical planes so that the tracer 57 will be caused to Jfollow the design in the pattern plate and obviously the eut-ter 6l will :tollen7 e similar path in the mold.

The pattern plate may be changed at will so that any desired design may l e produced or tinished in the mold and to ehaneje the pattern plate it is neeef-ifary merely to remore the set screw 56 and insert it in the eubstituted pattern platen ln a similar manner, the tracer pin 5( may be removed and a new pin substituted therefor when the pin has heroine .vorn to such an extent that it cannot be longer properly used, lnaeinueb the hanger 4l() may be pivotally swung about its sivireled eonneetion with the threaded bar and the motor-supporting` body 67 may he rocked about the stub shalt 72, itis obvious thm the most intricate design can be readily followed by the tracer and the Corresponding torni out in the mold by the tool 61. Y

lt is thought the operation ol the apparatus will be readily understood troni the foregoing description, taken in Connect-ion with the aeeonipanyingY drzmfings7 and it will be readily noted that l have provided an apparatus by which the Work ot linishin a mold inay be expeditiously performed.

The mechanism is not vunduly complicated and may be produced and installed at a low cost.

l'la'ving thus described the invention, what is claimed as new is:

l. The combination of a pattern plate, means Ytor holding said patternA plate stationary, a swiveled hanger, a supporting body mounted in said hanger ttor rocking lso movement, a motor carried by said body, a tracer mounted on the motor and engaging the pattern plate, and a tool carried by the said supporting body and operatively connected with the motor.

2. The combination of a standard, a pattern plate supported in the standard, a vertically adjustable bar mounted in the upper end et the standard, a hanger swiveled on the lower end of said bar, a motor mounted in the hanger ttor rocking movement, a tracer carried by the motor and engaging the pattern plate, a tool. carried by the motor support and operatively connected. with the motor, and an adjustable brace pivotally connected with the said vertically adjustable bar and passing through and supported by the standard.

`3. The combination of a standard, a vertically adjustable bar mounted in the upper extremity of the standard, a hanger swiveled on the lower end of said bar, a motor carried by said hanger, a tool connected with the motor, a pattern plate supported on the standard, a tracer` connected with the motor and engaging said pattern plate, a block pivotally mounted within the standard, a collar litted around the upper end of said hanger, a brace pivoted at its lower end to said collar and extending through the block pivoted within the standard, and a stop adjustably mounted upon the said brace and bearing upon the upper side oit the said pivoted block.

l. The combination of a standard, a car` rier secured in the standard and adjustable through and along the same, a pattern plate detachably secured to the carrier, a tool adapted to act upon a mold disposed below the pattern plate, and a tracer engaging the pattern plate and connected with the tool whereby the movement of the tracer will be duplicated by the tool.

5. The combination of a standard having slots in its sides, a carrier consisting of a plate disposed between the sides ot the standard, and cheek plates litted against said sides, fastening devices inserted through said cheek plates and through the slots in the standard into the ends ot tl plate, an arm adjustably secured in said plate, a pattern plate dctachably secured upon the end ot said arm, a tracer en fing the pattern plate` and a inold-treating tool connected with said tracer wherebj.' the travel of the tracer will be duplicated by the tool.

6. The combination of a pattern plate, a hanger, amotor support pivotally mounted in the lower end ot the hanger, a motor on said motor support, trznfer carried by the niet or and engaging the pattern plate,.a cutter ,i "11- .L 1 Y Y Asnail, supporter. 1n ano extending through the motor support and operatively connected with the motor, and a tool carried by said cutter shaft.

i'. The combination ol' a pattern plateA` a hanger mounted for turning` increment on a vertical axis, a niotoi-supporting body mounted in the lower end ot tht` hanger tor turning movement on a herr/:ontal axis, a tracer carried by the nio'tor and engaging the pattern plate, n bearing sleeve inserted through the motor-supporting body at a right angle to the pivotal support oi' the same, bushings titted in the tace ol said bearing sleeve, a cutter shattinscrted through said sleeve and said bushiinrs, a tool carried by said shaft, a sprocket adju/stably secured to the sha'tt and operati rely connected with the motor, and collars adjustably secured to the shaft adjacent and bearing against the ends ot the bushings.

S. The combination o'l a rotatable table, means for securing a mold thereon` a support disposed at one side of the table and overhangin the same, a cutter arranged to engage the roold, means tor suspendingl the cutter from the ovcrhanging support 'tor pivotal movement in intersecting planes, a pattern plate ou the support, and means whereby the cutter ma),v be olicrated and caused to travel in a path defined by the pat tern plate.

9. The combination of a rotatable table, means for securing a inold thereon` :l support arranged beside and overhanging (he table, a pattern plate mounted on said support above the table,` a cutter suspended from said support in position to act on a mold secured upon the table, and means for operating the cutter and causing it to follow a path delined by the pattern plate.

In testimony whereof I alix my signature.

SAMUEL A. MCCLELLAN. I`L. s] 

